I ran across a couple books recently that relate to IE, so I thought I'd share.
The first is "The Don't Go Hungry Diet," by Dr. Amanda Sainsbury-Salis (a scientist not physician). Published in New Zealand, I think, so not available directly in the states I don't think. But I browsed her website and registered so I could read the first chapter, plus she posts a FAQ section and newsletters that explain a lot. She developed her system based on her research and on her own weight loss experience. A lot of similarities with IE. But I actually like her viewpoint better. I think she integrates healthy food and weight loss better.
The second is "The Slow Down Diet" by Marc David, a nutritionist. His premise is that our obesity problem comes from the way we eat - not relaxed, not high quality, not with pleasure. His views on how eating in a rush and with unpleasant thoughts and emotions about food affect our digestion and metabolism are very interesting. I think perhaps the section on relaxation is the best. He actually offers no meal plan at all, and food guidelines in only a very general way. His "system" is one of 8 keys - Relaxation (including breathing), Quality, Awareness (mindfulness), Rhythm (not skipping meals, also non-food rhythms like sleep and relaxation and socializing), Pleasure, Thought, Story, and the Sacred.
I didn't read the latter half of the book in much detail as a I ran out of time, so I'm not quite sure what Story and Sacred were about. But I did skip to the end, and found the last paragraph to be amazing and unexpected; I'll try to copy and post it later. You'll see what I mean.
I'm not sure he's presenting anything earth-shatteringly new, but I know I can use all the encouragement I can get

. Like I said, I think I most appreciated the way he brings your emotional and mental state into the equation. His explanation of the "French Paradox" is that it's not just the food, it's that they eat under the influence of their parasympathetic nervous system, and we eat under the influence of our sympathetic nervous system.